Building the /mine endpoint

Let's build the final endpoint for our blockchain API: the mine endpoint, this will mine and create a new block:

1. To create a new block, we are going to use our createNewBlock method, which we already defined in our blockchain.js file. Let's go to our api.js file and create a new block inside the /mine endpoint:

app.get('/mine', function(req, res) {
    const newBlock = bitcoin.createNewBlock();
});

2. This createNewBlock method takes in three parameters: nonce, previousBlockHash, and hash:

Blockchain.prototype.createNewBlock = function(nonce, previousBlockHash, hash) {
  const newBlock = {
    index: this.chain.length + 1,
    timestamp: Date.now(),
    transactions: this.pendingTransactions,
    nonce: nonce,
    hash: hash,
    previousBlockHash: previousBlockHash
  };

  this.pendingTransactions = [];
  this.chain.push(newBlock);

  return...